Use scoped_ptr instead of linked_ptr from /e/c/features/*

extensions/common/features/base_feature_provider.h

Index: extensions/common/features/base_feature_provider.h
diff --git a/extensions/common/features/base_feature_provider.h b/extensions/common/features/base_feature_provider.h
index e82c46d5ab819100b58be6150f83b96104f72b04..3b766c8001db2421c1ab355493dc506c5167521d 100644
--- a/extensions/common/features/base_feature_provider.h
+++ b/extensions/common/features/base_feature_provider.h
@@ -9,11 +9,14 @@
 #include <string>
 #include <vector>
 
-#include "base/memory/linked_ptr.h"
-#include "base/values.h"
+#include "base/memory/scoped_ptr.h"
 #include "extensions/common/features/feature_provider.h"
 #include "extensions/common/features/simple_feature.h"
 
+namespace Base {
+class DictionaryValue;
+}
+
 namespace extensions {
 
 // Reads Features out of a simple JSON file description.
@@ -35,8 +38,7 @@ class BaseFeatureProvider : public FeatureProvider {
   const std::vector<std::string>& GetAllFeatureNames() const override;
 
  private:
-  typedef std::map<std::string, linked_ptr<Feature> > FeatureMap;
-  FeatureMap features_;
+  std::map<std::string, scoped_ptr<Feature>> features_;
 
   // Populated on first use.
   mutable std::vector<std::string> feature_names_;